Bootstrap Version And Cs-Cart 4.13.2.sp2

Hi, we're having a front-end developer work on the site and they need some basic information to be able to provide us with a better quality product. Anyone who could answer the following questions would be hugely helpful:
  1. What version of Bootstrap does CS-Cart Version 4.13.2.SP2 use?
  2. When trying to design HTML blocks on the front-end of a CS-Cart install, can we use straight Bootstrap or will the class names interfere with any other part of the framework?
Thanks for the help.

https://forum.cs-cart.com/topic/56057-which-bootstrap-framework-is-compatible-with-cs-cart-410x/#entry319081

Bootstrap was not updated since that date